Railroad Economics: Or, Notes, with Comments from a Tour Over Ohio Railways Under the Hon. H. Sabine, Commissioner of Railroads and Telegraphs

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D. Van Nostrand, 1882 - 131 Seiten
 

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Seite 71 - ... easement curve, it appears that the very best conditions possible to adopt for fixing it are to assume, first, that the car, in tilting to the difference of rail elevation as it passes along the easement curve, shall rotate about a longitudinal axis passing through the centre of gravity of its cross section, and, second, that it be accelerated in that tilting movement, so that a passenger at the side of the car shall experience only the sensation of a slight change in his own weight while on...
Seite 28 - muckbars" (the result of first rolling from puddle blooms), cutting and piling them, reheating to a welding heat, rolling into bars, then cutting, piling, and reheating again, when they are rolled to the needed sizes. Compression pieces are single refined, in which the last piling and rolling above described is omitted. Channel bars of columns and upper chords are thus treated. A fair quality of double refined iron in bars should have a tensile strength of 50,000 pounds per square inch ; an elastic...

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